Sports medicine international open最新文献_第6页

Pain Perception in Taekwondo: Relationship to Injury, Experience, and Time Loss. 跆拳道中的疼痛感知:与伤害、经验和时间损失的关系。

Sports medicine international open Pub Date : 2020-06-24 eCollection Date: 2020-08-01 DOI: 10.1055/a-1168-9167

Renee T Zhao, Abdullah Kandil, Danh V Nguyen, Luis Campos, Nirav H Amin, Eric Y Chang

{"title":"Pain Perception in Taekwondo: Relationship to Injury, Experience, and Time Loss.","authors":"Renee T Zhao, Abdullah Kandil, Danh V Nguyen, Luis Campos, Nirav H Amin, Eric Y Chang","doi":"10.1055/a-1168-9167","DOIUrl":"https://doi.org/10.1055/a-1168-9167","url":null,"abstract":"Abstract While the majority of sports medicine literature discusses the incidence and rehabilitation of sports injuries, there is a paucity regarding an athlete’s perception of pain during these injuries. This study describes the relationship between the perception of pain from injuries in a Taekwondo collegiate conference and injury characteristics such as injury type, location, mechanism, time loss, and the athlete’s competitive experience. In our study, we obtained reports from 62 Taekwondo athletes who were injured during the 2008–2009 Pacific West Taekwondo Conference collegiate season. Pain was recorded using the Numeric Rating Scale for Pain during athletes’ acute injury and at two weeks, six weeks, and subsequent monthly follow-ups. Pain scores were highest for sprain/strains (mean 5.4, standard error 0.47) and injuries to the lower body (mean 5.6, standard error 0.36). By mechanism, falls (mean 5.8, standard error 0.67) reported the highest levels of pain. There was a significant positive association between pain and time loss, where an increase in pain score of 1 point was associated with about 0.85 days (standard error 0.37) of time lost from training (p=0.0284). Notably, head injuries, although potentially more devastating and attracting widespread concern, were considered less painful.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 2","pages":"E53-E58"},"PeriodicalIF":0.0,"publicationDate":"2020-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1168-9167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38104036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Impact of Ice Slurry Ingestion During Break-Times on Repeated-Sprint Exercise in the Heat. 休息时间冰浆摄入对高温下重复冲刺运动的影响。

Sports medicine international open Pub Date : 2020-05-04 eCollection Date: 2020-08-01 DOI: 10.1055/a-1139-1761

Takashi Naito, Miki Haramura, Koji Muraishi, Misa Yamazaki, Hideyuki Takahashi

{"title":"Impact of Ice Slurry Ingestion During Break-Times on Repeated-Sprint Exercise in the Heat.","authors":"Takashi Naito, Miki Haramura, Koji Muraishi, Misa Yamazaki, Hideyuki Takahashi","doi":"10.1055/a-1139-1761","DOIUrl":"https://doi.org/10.1055/a-1139-1761","url":null,"abstract":"The study aimed to investigate the effects of ice slurry ingestion during break times and half-time (HT) on repeated-sprint performance and core temperature in the heat. Seven males performed two different trials as follows: ice slurry (-1°C) or room temperature water ingestion at each break and HT break at 36.5°C, 50% relative humidity. Participants performed 30 sets of 1-min periods of repeated- sprint exercises protocol using a cycling ergometer. Each period consisted of 5 sec of maximal pedaling, 25 sec of pedaling with no workload, and 30 sec of rest; two sets of exercise periods were separated by 10 min of rest. Each break was implemented for 1 min after every 5 sets. The rectal temperature in ice slurry ingestion was significantly lower than that of the room temperature water at 45 set (p=0.04). Total and mean work done was greater in ice slurry ingestion compared to room temperature water ingestion (p < 0.05). These results suggested that ice slurry ingestion during break times and HT break may be an effective cooling strategy to attenuate the rise of core temperature in the second half of exercise and improve the repeated-sprint exercise capacity in the heat.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 2","pages":"E45-E52"},"PeriodicalIF":0.0,"publicationDate":"2020-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1139-1761","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37925873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Adaption of Maximal Glycolysis Rate after Resistance Exercise with Different Volume Load. 不同容量负荷阻力运动后最大糖酵解速率的适应。

Sports medicine international open Pub Date : 2020-04-23 eCollection Date: 2020-08-01 DOI: 10.1055/a-1146-4236

Nico Nitzsche, Julian Christian Lenz, Pjotr Voronoi, Henry Schulz

{"title":"Adaption of Maximal Glycolysis Rate after Resistance Exercise with Different Volume Load.","authors":"Nico Nitzsche, Julian Christian Lenz, Pjotr Voronoi, Henry Schulz","doi":"10.1055/a-1146-4236","DOIUrl":"https://doi.org/10.1055/a-1146-4236","url":null,"abstract":"The aim of this study was to investigate the effect of six-weeks of resistance training with different volume load on the maximum glycolysis rate. 24 male strength-trained volunteers were assigned in a high volume low load (50% of their 1RM with 5 sets and reps up to muscle failure) and a low volume high load (70% of their 1RM with 5 sets of ten reps) resistance exercise group. The resistance training performed 3 days per week over 6 weeks. The maximum glycolysis rate was determined using isokinetic force testing before and after the intervention. There was a significant increase in glycolysis rate over the training period across all subjects (p=0.032). High volume low load exercise increased significantly from 0.271±0.067 mmol·l -1 ·s -1 to 0.298±0.067 mmol·l -1 ·s -1 (p=0.022) and low volume high load exercise showed no significant changes from 0.249±0.122 mmol·l -1 ·s -1 to 0.291±0.089 mmol·l -1 ·s -1 (p=0.233). No significant effect on glycolysis rate was observed between the training groups (p=0.650). Resistance training increases glycolysis rate regardless of volume load.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 2","pages":"E39-E44"},"PeriodicalIF":0.0,"publicationDate":"2020-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1146-4236","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37908814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Relationship between VO _2max , under Water Swim Testing and Artistic Swim Solo Performance. vo2max、水下游泳测试与艺术游泳独舞表演的关系

Sports medicine international open Pub Date : 2020-04-01 DOI: 10.1055/a-1089-5051

Eric Viana, David J Bentley, Heather M Logan-Sprenger

{"title":"Relationship between VO 2max , under Water Swim Testing and Artistic Swim Solo Performance.","authors":"Eric Viana, David J Bentley, Heather M Logan-Sprenger","doi":"10.1055/a-1089-5051","DOIUrl":"https://doi.org/10.1055/a-1089-5051","url":null,"abstract":"The purpose of this study was to evaluate the relationship between: 1) laboratory-determined cycling peak oxygen consumption (VO 2max ) and AS performance in a new underwater swim test (UWST), and 2) cycling VO 2max and ventilatory threshold (VT) in cycling and performance score during a simulated AS solo routine. Trained artistic swimmers (n=15, 15.8±0.8 yrs., height: 169.1±5.4 cm, body mass: 57.1±6.3 kg) completed (1) a maximal incremental cycle test to exhaustion to determine VO 2max , (2) the UWST which comprised 275 m of freestyle and underwater breaststroke, and (3) a simulated solo competition where artistic swimming elements were evaluated by five FINA judges. There was a significant correlation between mean element score and (i) VO 2max (48±4 mL . kg . min -1 , r=0.44, p =0.05), and (ii) UWST (r=-0.64, p =0.005). However, there was an insignificant relationship between cycling ventilatory threshold and mean element score (r=-0.36, p =0.10). In addition, the results demonstrate a significant relationship between HR at the ventilatory threshold and peak HR of the UWST (r=-0.64, p =0.014). The results of this study demonstrate that VO 2max is an important determinant of AS performance. In addition, the UWST appears to be a useful indicator of AS performance.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 1","pages":"E27-E31"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1089-5051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37809555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of Overspeed or Overload Plyometric Training on Jump Height and Lifting Velocity. 超速或过载增强训练对跳跃高度和提升速度的影响。

Sports medicine international open Pub Date : 2020-04-01 eCollection Date: 2020-08-01 DOI: 10.1055/a-1116-0749

Nicolay Stien, Morten Strate, Vidar Andersen, Atle Hole Saeterbakken

{"title":"Effects of Overspeed or Overload Plyometric Training on Jump Height and Lifting Velocity.","authors":"Nicolay Stien, Morten Strate, Vidar Andersen, Atle Hole Saeterbakken","doi":"10.1055/a-1116-0749","DOIUrl":"https://doi.org/10.1055/a-1116-0749","url":null,"abstract":"The aim of this study was to examine the effects of overspeed or overload plyometric training on jump height and lifting velocity in resistance trained females without plyometric training experience. Fifty-six participants (age: 21.2±1.7 years; body mass: 65.1±8.2 kg; height: 168.0±5.9 cm) were randomly allocated to either an overspeed (n=18), overload (n=18), or passive control (n=16) group. The two training groups completed 18.7±1.7 sessions consisting of three different plyometric exercises with overspeed or overload over eight weeks. Apart from the external loading, the two training modalities were identical. Following the training period, the changes in the recorded variables were not significantly different from those in the control group, nor did the training groups differ from each other. The training groups improved peak and average lifting velocity in the 40 and 60% of body mass loading conditions (9.50-33.37%, p=<0.001-0.038), whereas only the average lifting velocity improved in the 80% of body mass loading condition (OS: 14.47%, p<0.001 and OL: 23.13%, p<0.001). No significant changes occurred in the control group (9.18-13.55%, P=0.062-0.980). Overspeed and overload plyometric training may be viable methods for improving lifting velocity, but not squat jump height, in a population without plyometric training experience.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 2","pages":"E32-E38"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1116-0749","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37809556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Cycling Performance in Short-term Efforts: Laboratory and Field-Based Data in XCO Athletes. 短期努力中的自行车运动表现：XCO 运动员的实验室和现场数据。

Sports medicine international open Pub Date : 2020-03-27 eCollection Date: 2020-01-01 DOI: 10.1055/a-1101-5750

Patrick Schneeweiss, Philipp Schellhorn, Daniel Haigis, Andreas Niess, Peter Martus, Inga Krauss

{"title":"Cycling Performance in Short-term Efforts: Laboratory and Field-Based Data in XCO Athletes.","authors":"Patrick Schneeweiss, Philipp Schellhorn, Daniel Haigis, Andreas Niess, Peter Martus, Inga Krauss","doi":"10.1055/a-1101-5750","DOIUrl":"10.1055/a-1101-5750","url":null,"abstract":"Mountain bike cross-country Olympic has an intermittent performance profile, underlining the importance of short-term but high cycling power output. Previous findings indicate that power output during sprint tests differs between laboratory and field-based conditions and that cycling cadence rises with increasing workload. The aim was therefore to examine power output and cadence in short-term efforts under laboratory and field conditions. Twenty-three competitive athletes (17.9±3.7 years) performed a laboratory power profile test and a simulated race within one week. Power output and cadence during the power profile test were compared to corresponding short-term efforts during the race over durations of 10-300s (TT 10-300 ). Differences were TT 10 +8%, TT 30 +7%, TT 60 -15% and TT 300 -12% for power output and+10%,+8%,+19%,+21% for cadence respectively. Compared to the race, we found higher power output during the power profile test for the shorter efforts but lower for TT 60 and TT 300 . Confirming previous results, cadence was higher during the power profile test compared to the respective intervals of the race and increased with increasing workload or shorter time trial duration. Future research should take into account that compared to the field, a higher cadence is used in laboratory settings to produce similar power output.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 1","pages":"E19-E26"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a8/8b/10-1055-a-1101-5750.PMC7101247.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37787987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sex Differences in Cardiac AMP-Activated Protein Kinase Following Exhaustive Exercise. 力竭运动后心脏amp活化蛋白激酶的性别差异。

Sports medicine international open Pub Date : 2020-03-20 eCollection Date: 2020-01-01 DOI: 10.1055/a-1115-6373

Kevin D Brown, Edward D Waggy, Sreejayan Nair, Timothy J Robinson, Emily E Schmitt, Danielle R Bruns, D Paul Thomas

{"title":"Sex Differences in Cardiac AMP-Activated Protein Kinase Following Exhaustive Exercise.","authors":"Kevin D Brown, Edward D Waggy, Sreejayan Nair, Timothy J Robinson, Emily E Schmitt, Danielle R Bruns, D Paul Thomas","doi":"10.1055/a-1115-6373","DOIUrl":"https://doi.org/10.1055/a-1115-6373","url":null,"abstract":"Ischemic heart disease presents with significant differences between sexes. Endurance exercise protects the heart against ischemic disease and also distinctly impacts male and female patients through unidentified mechanisms, though some evidence implicates 5'-AMP-activated protein kinase (AMPK). The purpose of this investigation was to assess the impact of training and sex on cardiac AMPK activation following exhaustive exercise. AMPK activation was measured in trained and sedentary mice of both sexes. Trained mice ran on a treadmill at progressively increasing speeds and duration for 12 weeks. Trained and sedentary mice of both sexes were euthanized immediately following exhaustive exercise and compared to sedentary controls. Endurance training elicited adaptations indicative of aerobic adaptation including higher max running velocities and cardiac hypertrophy with no differences between males and females. AMPK activity was higher in male compared to females, and trained exhibited higher AMPK activity compared to sedentary mice. In response to training, male mice activated AMPK more robustly than female mice. Chronic exercise training increases the ability to activate cardiac AMPK in response to exhaustive exercise in a sex-specific manner. Understanding the interaction between exercise and sex is vital for use of exercise as medicine for heart disease in both men and women.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 1","pages":"E13-E18"},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1115-6373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37788057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Cross-Cultural Adaptation and Validation of the Arabic Version of the Intermittent and Constant Osteoarthritis Pain Questionnaire. 阿拉伯语版间歇性和持续性骨关节炎疼痛问卷的跨文化适应和验证。

Sports medicine international open Pub Date : 2020-02-17 eCollection Date: 2020-01-01 DOI: 10.1055/a-1031-0947

Musab Alageel, Abdullah Al Turki, Ali Alhandi, Rawa Alohali, Rakan Alsalem, Sami Aleissa

{"title":"Cross-Cultural Adaptation and Validation of the Arabic Version of the Intermittent and Constant Osteoarthritis Pain Questionnaire.","authors":"Musab Alageel, Abdullah Al Turki, Ali Alhandi, Rawa Alohali, Rakan Alsalem, Sami Aleissa","doi":"10.1055/a-1031-0947","DOIUrl":"https://doi.org/10.1055/a-1031-0947","url":null,"abstract":"This study aimed to translate and adapt the Intermittent and Constant Osteoarthritis Pain questionnaire into the Arabic language and evaluate the validity and reliability of this scale for participants with knee or hip osteoarthritis. This questionnaire was translated based on the Manufacturers Alliance for Productivity and Innovation protocol. The test-retest reliability was calculated using the Intraclass Correlation Coeﬃcient. Then, Cronbach's alpha was used to assess the internal consistency of Intermittent and Constant Osteoarthritis Pain questionnaire. After that, the criterion validity was evaluated against the Knee injury and Osteoarthritis Outcome Score. A total of 90 participants were included in this study, of which 29 participants were re-evaluated for reliability testing. The Intraclass Correlation Coeﬃcient of the Knee Intermittent and Constant Osteoarthritis Pain questionnaire were 0.841, 0.923 and 0.911 for the total, constant, and intermittent knee pain, respectively. Cronbach's alpha was 0.88, 0.93 and 0.94 for the total score, the intermittent knee pain and the constant knee pain, respectively. Eventually, criterion validity was r=0.24(P<0.05). Intermittent and Constant Osteoarthritis Pain in Arabic is a valid and reliable instrument to be used in Arabic-speaking patients with knee/hip osteoarthritis.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 1","pages":"E8-E12"},"PeriodicalIF":0.0,"publicationDate":"2020-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1031-0947","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37654475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishing Reference Cardiorespiratory Fitness Parameters in Alzheimer's Disease. 建立阿尔茨海默病参考心肺适能参数。

Sports medicine international open Pub Date : 2020-01-30 eCollection Date: 2020-01-01 DOI: 10.1055/a-1089-4957

Dereck Salisbury, Fang Yu

{"title":"Establishing Reference Cardiorespiratory Fitness Parameters in Alzheimer's Disease.","authors":"Dereck Salisbury, Fang Yu","doi":"10.1055/a-1089-4957","DOIUrl":"https://doi.org/10.1055/a-1089-4957","url":null,"abstract":"Evidence is growing for aerobic exercise training as a viable means to attenuate cognitive losses associated with Alzheimer's disease. The mechanism of action for aerobic exercise's cognitive benefits is likely enhanced cardiorespiratory fitness and its response to incremental aerobic exercise have been incompletely evaluated in Alzheimer's disease. The aim of this analysis was to establish cardiorespiratory fitness reference values in older adults with mild to moderate Alzheimer's disease using a cardiopulmonary graded exercise testing. Ninety-seven community-dwelling older adults with mild to moderate Alzheimer's disease underwent a symptom limited cardiopulmonary graded exercise test on a cycle ergometer. Differences between sexes and between Alzheimer's disease participants with and without diagnosis of cardiovascular diseases were assessed by independent T-tests. Peak oxygen consumption was 10-20% lower than those achieved by similar clinical populations on treadmill tests. As expected, males produced significantly higher peak oxygen consumption compared to females (p =0 .02). However, the presence of concurrent cardiovascular disease did not result in statistically significant lower peak oxygen consumption compared to those without cardiovascular disease. These data provide a frame of reference for metabolic, cardiovascular, and ventilatory function during cardiopulmonary graded exercise testing performed on cycle ergometer in older adults with mild to moderate Alzheimer's disease.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"4 1","pages":"E1-E7"},"PeriodicalIF":0.0,"publicationDate":"2020-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1089-4957","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37602197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Prediction of Ergogenic Mouthguard Effects in Volleyball: A Pilot Trial 排球运动中兴奋性漱口效果的初步预测

Sports medicine international open Pub Date : 2019-11-01 DOI: 10.1055/a-1036-5888

A. Schulze, M. Busse

{"title":"Prediction of Ergogenic Mouthguard Effects in Volleyball: A Pilot Trial","authors":"A. Schulze, M. Busse","doi":"10.1055/a-1036-5888","DOIUrl":"https://doi.org/10.1055/a-1036-5888","url":null,"abstract":"Abstract Dental occlusion may affect static and dynamic balance. The effects of a mouthguard on pinpoint accuracy in volleyball were investigated in 28 players who completed a volleyball specific test. Also, masticatory electromyographic tests were performed. The mean pinpoint accuracy was significantly higher with a mouthguard (68.6±9.3 vs. 64.0±7.0 points from 100; p< 0.006). However, differential mouthguard effects were seen, and three subgroups were classified: Group 1 (markedly improved pinpoint accuracy), Group 2 (improved pinpoint accuracy), and Group 3 (reduced pinpoint accuracy). Group 1 had a high masseter resting tone, the masseter activity was low in MVC (maximum voluntary clench) and increased in BOC (maximum bite on cotton rolls; p< 0.04). This indicates a masseter weakness, which would be compensated by a mouthguard. In Group 2, the masseter activity in MVC was high-normal with an imbalance which was improved in BOC (p< 0.01), indicating a possible mouthguard benefit. In Group 3, MVC and BOC were in a high-normal range and showed no relevant deficits. In these subjects the mouthguard had adverse effects. Overall, subjects with masticatory deficits had a benefit from the mouthguard in pinpoint accuracy. Positive or negative mouthguard responders may be detectible from electromyographic tests.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"3 1","pages":"E96 - E101"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1036-5888","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45151225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3